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1 (% style="text-align:center" %)
2 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653266934636-343.png?width=385&height=385&rev=1.1||alt="1653266934636-343.png" height="385" width="385"]]
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4
5
6 **RS485-LN – RS485 to LoRaWAN Converter User Manual**
7
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9
10
11 **Table of Contents:**
12
13 * [[1.Introduction>>path:#H1.Introduction]]
14 ** [[1.1 What is RS485-LN RS485 to LoRaWAN Converter>>path:#H1.1A0WhatisRS485-LNRS485toLoRaWANConverter]]
15 ** [[1.2 Specifications>>path:#H1.2A0Specifications]]
16 ** [[1.3 Features>>path:#H1.3Features]]
17 ** [[1.4 Applications>>path:#H1.4A0Applications]]
18 ** [[1.5 Firmware Change log>>path:#H1.5A0FirmwareChangelog]]
19 ** [[1.6 Hardware Change log>>path:#H1.6HardwareChangelog]]
20 * [[2. Power ON Device>>path:#H2.PowerONDevice]]
21 * [[3. Operation Mode>>path:#H3.A0OperationMode]]
22 ** [[3.1 How it works?>>path:#H3.1Howitworks3F]]
23 ** [[3.2 Example to join LoRaWAN network>>path:#H3.2ExampletojoinLoRaWANnetwork]]
24 ** [[3.3 Configure Commands to read data>>path:#H3.3ConfigureCommandstoreaddata]]
25 *** [[3.3.1 onfigure UART settings for RS485 or TTL communication>>path:#H3.3.1onfigureUARTsettingsforRS485orTTLcommunication]]
26 *** [[3.3.2 Configure sensors>>path:#H3.3.2Configuresensors]]
27 *** [[3.3.3 Configure read commands for each sampling>>path:#H3.3.3Configurereadcommandsforeachsampling]]
28 *** [[3.3.4 Compose the uplink payload>>path:#H3.3.4Composetheuplinkpayload]]
29 *** [[3.3.5 Uplink on demand>>path:#H3.3.5Uplinkondemand]]
30 *** [[3.3.6 Uplink on Interrupt>>path:#H3.3.6UplinkonInterrupt]]
31 ** [[3.4 Uplink Payload>>path:#H3.4UplinkPayload]]
32 ** [[3.5 Configure RS485-BL via AT or Downlink>>path:#H3.5ConfigureRS485-BLviaATorDownlink]]
33 *** [[3.5.1 Common Commands>>path:#H3.5.1CommonCommands]]
34 *** [[3.5.2 Sensor related commands>>path:#H3.5.2Sensorrelatedcommands]]
35 *** [[3.5.3 Sensor related commands>>path:#H3.5.3A0Sensorrelatedcommands]]
36 **** [[RS485 Debug Command>>path:#HRS485DebugCommand]]
37 **** [[Set Payload version>>path:#HSetPayloadversion]]
38 **** [[Set RS485 Sampling Commands>>path:#HSetRS485SamplingCommands]]
39 **** [[Fast command to handle MODBUS device>>path:#HFastcommandtohandleMODBUSdevice]]
40 **** [[RS485 command timeout>>path:#HRS485commandtimeout]]
41 **** [[Uplink payload mode>>path:#HUplinkpayloadmode]]
42 **** [[Manually trigger an Uplink>>path:#HManuallytriggeranUplink]]
43 **** [[Clear RS485 Command>>path:#HClearRS485Command]]
44 **** [[Set Serial Communication Parameters>>path:#HSetSerialCommunicationParameters]]
45 ** [[3.6 Listening mode for RS485 network>>path:#H3.6A0ListeningmodeforRS485network]]
46 ** [[3.7 Buttons>>path:#H3.7Buttons]]
47 ** [[3.8 LEDs>>path:#H3.8LEDs]]
48 * [[4. Case Study>>path:#H4.CaseStudy]]
49 * [[5. Use AT Command>>path:#H5.UseATCommand]]
50 ** [[5.1 Access AT Command>>path:#H5.1AccessATCommand]]
51 ** [[5.2 Common AT Command Sequence>>path:#H5.2CommonATCommandSequence]]
52 *** [[5.2.1 Multi-channel ABP mode (Use with SX1301/LG308)>>path:#H5.2.1Multi-channelABPmode28UsewithSX13012FLG30829]]
53 *** [[5.5.2 Single-channel ABP mode (Use with LG01/LG02)>>path:#H5.5.2Single-channelABPmode28UsewithLG012FLG0229]]
54 * [[6. FAQ>>path:#H6.FAQ]]
55 ** [[6.1 How to upgrade the image?>>path:#H6.1Howtoupgradetheimage3F]]
56 ** [[6.2 How to change the LoRa Frequency Bands/Region?>>path:#H6.2HowtochangetheLoRaFrequencyBands2FRegion3F]]
57 ** [[6.3 How many RS485-Slave can RS485-BL connects?>>path:#H6.3HowmanyRS485-SlavecanRS485-BLconnects3F]]
58 ** [[6.4 Compatible question to ChirpStack and TTI LoRaWAN server ?>>path:#H6.4CompatiblequestiontoChirpStackandTTILoRaWANserver3F]]
59 * [[7. Trouble Shooting>>path:#H7.TroubleShooting]]
60 ** [[7.1 Downlink doesn’t work, how to solve it?>>path:#H7.1Downlinkdoesn2019twork2Chowtosolveit3F]]
61 ** [[7.2 Why I can’t join TTN V3 in US915 /AU915 bands?>>path:#H7.2WhyIcan2019tjoinTTNV3inUS9152FAU915bands3F]]
62 * [[8. Order Info>>path:#H8.OrderInfo]]
63 * [[9.Packing Info>>path:#H9.PackingInfo]]
64 * [[10. FCC Caution for RS485LN-US915>>path:#H10.FCCCautionforRS485LN-US915]]
65 * [[11. Support>>path:#H11.Support]]
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71
72
73 = 1.Introduction =
74
75 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
76
77 (((
78 (((
79 (((
80 The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
81 )))
82 )))
83
84 (((
85 (((
86 RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
87 )))
88 )))
89
90 (((
91 (((
92 (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
93 )))
94 )))
95
96 (((
97 (((
98 (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
99 )))
100
101 (((
102 (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
103 )))
104 )))
105 )))
106
107 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653267211009-519.png?width=724&height=419&rev=1.1||alt="1653267211009-519.png" height="419" width="724"]]
108
109
110 == 1.2 Specifications ==
111
112
113 **Hardware System:**
114
115 * STM32L072CZT6 MCU
116 * SX1276/78 Wireless Chip 
117 * Power Consumption (exclude RS485 device):
118 ** Idle: 32mA@12v
119 ** 20dB Transmit: 65mA@12v
120
121 **Interface for Model:**
122
123 * RS485
124 * Power Input 7~~ 24V DC. 
125
126 **LoRa Spec:**
127
128 * Frequency Range:
129 ** Band 1 (HF): 862 ~~ 1020 Mhz
130 ** Band 2 (LF): 410 ~~ 528 Mhz
131 * 168 dB maximum link budget.
132 * +20 dBm - 100 mW constant RF output vs.
133 * +14 dBm high efficiency PA.
134 * Programmable bit rate up to 300 kbps.
135 * High sensitivity: down to -148 dBm.
136 * Bullet-proof front end: IIP3 = -12.5 dBm.
137 * Excellent blocking immunity.
138 * Low RX current of 10.3 mA, 200 nA register retention.
139 * Fully integrated synthesizer with a resolution of 61 Hz.
140 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
141 * Built-in bit synchronizer for clock recovery.
142 * Preamble detection.
143 * 127 dB Dynamic Range RSSI.
144 * Automatic RF Sense and CAD with ultra-fast AFC.
145 * Packet engine up to 256 bytes with CRC
146
147 == 1.3 Features ==
148
149 * LoRaWAN Class A & Class C protocol (default Class C)
150 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
151 * AT Commands to change parameters
152 * Remote configure parameters via LoRa Downlink
153 * Firmware upgradable via program port
154 * Support multiply RS485 devices by flexible rules
155 * Support Modbus protocol
156 * Support Interrupt uplink (Since hardware version v1.2)
157
158 == 1.4 Applications ==
159
160 * Smart Buildings & Home Automation
161 * Logistics and Supply Chain Management
162 * Smart Metering
163 * Smart Agriculture
164 * Smart Cities
165 * Smart Factory
166
167 == 1.5 Firmware Change log ==
168
169 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
170
171
172 == 1.6 Hardware Change log ==
173
174 (((
175 (((
176 (((
177 v1.2: Add External Interrupt Pin.
178 )))
179
180 (((
181 v1.0: Release
182 )))
183
184
185 )))
186 )))
187
188 = 2. Power ON Device =
189
190 (((
191 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
192
193 * Power Source VIN to RS485-LN VIN+
194 * Power Source GND to RS485-LN VIN-
195
196 (((
197 Once there is power, the RS485-LN will be on.
198 )))
199
200 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268091319-405.png?rev=1.1||alt="1653268091319-405.png"]]
201
202
203 )))
204
205 = 3. Operation Mode =
206
207 == 3.1 How it works? ==
208
209 (((
210 (((
211 The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
212 )))
213
214
215 )))
216
217 == 3.2 Example to join LoRaWAN network ==
218
219 Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
220
221 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268155545-638.png?width=724&height=334&rev=1.1||alt="1653268155545-638.png" height="334" width="724"]]
222
223
224 (((
225 (((
226 The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
227 )))
228
229 (((
230 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
231 )))
232
233 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268227651-549.png?width=720&height=592&rev=1.1||alt="1653268227651-549.png" height="592" width="720"]]
234
235 (((
236 The LG308 is already set to connect to (% class="wikiinternallink" %)[[TTN V3 network >>url:https://www.thethingsnetwork.org/]](%%). So what we need to now is only configure the TTN V3:
237 )))
238
239 (((
240 **Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
241 )))
242
243 (((
244 Each RS485-LN is shipped with a sticker with unique device EUI:
245 )))
246 )))
247
248 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953462722-299.png?rev=1.1||alt="1652953462722-299.png"]]
249
250 (((
251 (((
252 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
253 )))
254
255 (((
256 Add APP EUI in the application.
257 )))
258 )))
259
260 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-1.png?rev=1.1||alt="image-20220519174512-1.png"]]
261
262 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-2.png?width=720&height=323&rev=1.1||alt="image-20220519174512-2.png" height="323" width="720"]]
263
264 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-3.png?width=724&height=556&rev=1.1||alt="image-20220519174512-3.png" height="556" width="724"]]
265
266 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-4.png?rev=1.1||alt="image-20220519174512-4.png"]]
267
268 You can also choose to create the device manually.
269
270 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953542269-423.png?width=723&height=710&rev=1.1||alt="1652953542269-423.png" height="710" width="723"]]
271
272 Add APP KEY and DEV EUI
273
274 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953553383-907.png?width=724&height=514&rev=1.1||alt="1652953553383-907.png" height="514" width="724"]]
275
276
277 (((
278 **Step 2**: Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
279 )))
280
281 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953568895-172.png?width=724&height=232&rev=1.1||alt="1652953568895-172.png" height="232" width="724"]]
282
283
284 == 3.3 Configure Commands to read data ==
285
286 (((
287 (((
288 There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#H3.5ConfigureRS485-BLviaATorDownlink]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
289 )))
290
291 (((
292 (% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
293
294
295 )))
296 )))
297
298 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
299
300 To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
301
302 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
303 |=(% style="width: 110px;" %)(((
304 **AT Commands**
305 )))|=(% style="width: 190px;" %)(((
306 **Description**
307 )))|=(% style="width: 190px;" %)(((
308 **Example**
309 )))
310 |(% style="width:110px" %)(((
311 AT+BAUDR
312 )))|(% style="width:190px" %)(((
313 Set the baud rate (for RS485 connection). Default Value is: 9600.
314 )))|(% style="width:190px" %)(((
315 (((
316 AT+BAUDR=9600
317 )))
318
319 (((
320 Options: (1200,2400,4800,14400,19200,115200)
321 )))
322 )))
323 |(% style="width:110px" %)(((
324 AT+PARITY
325 )))|(% style="width:190px" %)(((
326 Set UART parity (for RS485 connection)
327 )))|(% style="width:190px" %)(((
328 (((
329 AT+PARITY=0
330 )))
331
332 (((
333 Option: 0: no parity, 1: odd parity, 2: even parity
334 )))
335 )))
336 |(% style="width:110px" %)(((
337 AT+STOPBIT
338 )))|(% style="width:190px" %)(((
339 (((
340 Set serial stopbit (for RS485 connection)
341 )))
342
343 (((
344
345 )))
346 )))|(% style="width:190px" %)(((
347 (((
348 AT+STOPBIT=0 for 1bit
349 )))
350
351 (((
352 AT+STOPBIT=1 for 1.5 bit
353 )))
354
355 (((
356 AT+STOPBIT=2 for 2 bits
357 )))
358 )))
359
360 === 3.3.2 Configure sensors ===
361
362 (((
363 (((
364 Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
365 )))
366 )))
367
368 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
369 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
370 |AT+CFGDEV|(% style="width:110px" %)(((
371 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
372
373 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
374
375 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
376 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
377
378 === 3.3.3 Configure read commands for each sampling ===
379
380 (((
381 During each sampling, we need confirm what commands we need to send to the RS485 sensors to read data. After the RS485 sensors send back the value, it normally include some bytes and we only need a few from them for a shorten payload.
382
383 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
384
385 This section describes how to achieve above goals.
386
387 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
388
389
390 **Each RS485 commands include two parts:**
391
392 ~1. What commands RS485-LN will send to the RS485 sensors. There are total 15 commands from **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF**. All commands are of same grammar.
393
394 2. How to get wanted value the from RS485 sensors returns from by 1). There are total 15 AT Commands to handle the return, commands are **AT+DATACUT1**,**AT+DATACUT2**,…, **AT+DATACUTF** corresponding to the commands from 1). All commands are of same grammar.
395
396 3. Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example **AT+CMDDL1=1000** to send the open time to 1000ms
397
398
399 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
400
401
402 Below are examples for the how above AT Commands works.
403
404
405 **AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
406
407 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
408 |(% style="width:496px" %)(((
409 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
410
411 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
412
413 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
414 )))
415
416 For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
417
418 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
419
420
421 **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
422
423 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
424 |(% style="width:510px" %)(((
425 **AT+DATACUTx=a,b,c**
426
427 * **a: length for the return of AT+COMMAND**
428 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
429 * **c: define the position for valid value.  **
430 )))
431
432 **Examples:**
433
434 * Grab bytes:
435
436 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-1.png?rev=1.1||alt="image-20220602153621-1.png"]]
437
438
439 * Grab a section.
440
441 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-2.png?rev=1.1||alt="image-20220602153621-2.png"]]
442
443
444 * Grab different sections.
445
446 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-3.png?rev=1.1||alt="image-20220602153621-3.png"]]
447
448
449 )))
450
451 === 3.3.4 Compose the uplink payload ===
452
453 (((
454 Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
455
456
457 )))
458
459 (((
460 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
461
462
463 )))
464
465 (((
466 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
467 )))
468
469 (((
470 Final Payload is
471 )))
472
473 (((
474 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
475 )))
476
477 (((
478 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
479 )))
480
481 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653269759169-150.png?width=716&height=513&rev=1.1||alt="1653269759169-150.png" height="513" width="716"]]
482
483
484 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
485
486
487 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
488
489 Final Payload is
490
491 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
492
493
494 1. PAYVER: Defined by AT+PAYVER
495 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
496 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
497 1. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
498
499 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602155039-4.png?rev=1.1||alt="image-20220602155039-4.png"]]
500
501
502 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
503
504 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
505
506 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
507
508 DATA3=the rest of Valid value of RETURN10= **30**
509
510
511 (% style="color:red" %)Notice: In firmware v1.3, the Max bytes has been changed according to the max bytes in different Frequency Bands for lowest SF. As below:
512
513 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
514
515 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
516
517 * For US915 band, max 11 bytes for each uplink.
518
519 ~* For all other bands: max 51 bytes for each uplink.
520
521
522 Below are the uplink payloads:
523
524 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654157178836-407.png?rev=1.1||alt="1654157178836-407.png"]]
525
526
527 === 3.3.5 Uplink on demand ===
528
529 Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
530
531 Downlink control command:
532
533 **0x08 command**: Poll an uplink with current command set in RS485-LN.
534
535 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
536
537
538
539 === 3.3.6 Uplink on Interrupt ===
540
541 RS485-LN support external Interrupt uplink since hardware v1.2 release.
542
543 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654157342174-798.png?rev=1.1||alt="1654157342174-798.png"]]
544
545 Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
546
547
548 == 3.4 Uplink Payload ==
549
550
551 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220606110929-1.png?rev=1.1||alt="image-20220606110929-1.png"]]
552
553 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
554
555
556 == 3.5 Configure RS485-BL via AT or Downlink ==
557
558 (((
559 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
560 )))
561
562 (((
563 There are two kinds of Commands:
564 )))
565
566 * (((
567 (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
568 )))
569
570 * (((
571 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
572 )))
573
574 (((
575
576 )))
577
578
579 === 3.5.1 Common Commands ===
580
581 They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
582
583
584 === 3.5.2 Sensor related commands ===
585
586 Response feature is added to the server's downlink, a special package with a FPort of 200 will be uploaded immediately after receiving the data sent by the server.
587
588 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602163333-5.png?width=1160&height=263&rev=1.1||alt="image-20220602163333-5.png" height="263" width="1160"]]
589
590 The first byte of this package represents whether the configuration is successful, 00 represents failure, 01 represents success. Except for the first byte, the other is the previous downlink. (All commands except A8 type commands are applicable)
591
592
593 === 3.5.3 Sensor related commands ===
594
595
596
597
598 ==== **RS485 Debug Command** ====
599
600 (((
601 This command is used to configure the RS485 devices; they won’t be used during sampling.
602 )))
603
604 * (((
605 **AT Command**
606 )))
607
608 (% class="box infomessage" %)
609 (((
610 (((
611 **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
612 )))
613 )))
614
615 (((
616 m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
617 )))
618
619 * (((
620 **Downlink Payload**
621 )))
622
623 (((
624 Format: A8 MM NN XX XX XX XX YY
625 )))
626
627 (((
628 Where:
629 )))
630
631 * (((
632 MM: 1: add CRC-16/MODBUS ; 0: no CRC
633 )))
634 * (((
635 NN: The length of RS485 command
636 )))
637 * (((
638 XX XX XX XX: RS485 command total NN bytes
639 )))
640 * (((
641 (((
642 YY: How many bytes will be uplink from the return of this RS485 command,
643 )))
644
645 * (((
646 if YY=0, RS485-LN will execute the downlink command without uplink;
647 )))
648 * (((
649 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
650 )))
651 * (((
652 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
653 )))
654 )))
655
656 (((
657 **Example 1** ~-~-> Configure without ask for uplink (YY=0)
658 )))
659
660 (((
661 To connect a Modbus Alarm with below commands.
662 )))
663
664 * (((
665 The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
666 )))
667
668 * (((
669 The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
670 )))
671
672 (((
673 So if user want to use downlink command to control to RS485 Alarm, he can use:
674 )))
675
676 (((
677 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
678 )))
679
680 (((
681 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
682 )))
683
684 (((
685 A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
686 )))
687
688 (((
689
690 )))
691
692 (((
693 **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
694 )))
695
696 (((
697 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
698 )))
699
700 (((
701
702 )))
703
704 (((
705 RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:
706 )))
707
708 (((
709 **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
710 )))
711
712 (((
713 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654159460680-153.png?rev=1.1||alt="1654159460680-153.png"]]
714 )))
715
716
717
718
719 ==== **Set Payload version** ====
720
721 (((
722 This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
723 )))
724
725 * (((
726 **AT Command:**
727 )))
728
729 (% class="box infomessage" %)
730 (((
731 (((
732 **AT+PAYVER: Set PAYVER field = 1**
733 )))
734 )))
735
736 * (((
737 **Downlink Payload:**
738 )))
739
740 (((
741 **0xAE 01**  ~-~-> Set PAYVER field =  0x01
742 )))
743
744 (((
745 **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
746 )))
747
748
749
750
751 ==== **Set RS485 Sampling Commands** ====
752
753 (((
754 AT+COMMANDx or AT+DATACUTx
755 )))
756
757 (((
758 These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>path:#H3.3.3Configurereadcommandsforeachsampling]].
759 )))
760
761 (((
762
763 )))
764
765 * (((
766 **AT Command:**
767 )))
768
769 (% class="box infomessage" %)
770 (((
771 (((
772 **AT+COMMANDx: Configure RS485 read command to sensor.**
773 )))
774 )))
775
776 (% class="box infomessage" %)
777 (((
778 (((
779 **AT+DATACUTx: Configure how to handle return from RS485 devices.**
780 )))
781 )))
782
783 (((
784
785 )))
786
787 * (((
788 **Downlink Payload:**
789 )))
790
791 (((
792 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
793 )))
794
795 (((
796 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
797 )))
798
799 (((
800 Format: AF MM NN LL XX XX XX XX YY
801 )))
802
803 (((
804 Where:
805 )))
806
807 * (((
808 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
809 )))
810 * (((
811 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
812 )))
813 * (((
814 LL:  The length of AT+COMMAND or AT+DATACUT command
815 )))
816 * (((
817 XX XX XX XX: AT+COMMAND or AT+DATACUT command
818 )))
819 * (((
820 YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
821 )))
822
823 (((
824 **Example:**
825 )))
826
827 (((
828 (% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
829 )))
830
831 (((
832 (% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
833 )))
834
835 (((
836 (% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
837 )))
838
839
840
841
842 ==== **Fast command to handle MODBUS device** ====
843
844 (((
845 AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
846 )))
847
848 (((
849 This command is valid since v1.3 firmware version
850 )))
851
852 (((
853 AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
854 )))
855
856 (((
857
858 )))
859
860 (((
861 **Example:**
862 )))
863
864 * (((
865 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
866 )))
867 * (((
868 AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
869 )))
870 * (((
871 AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
872 )))
873
874 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602165351-6.png?rev=1.1||alt="image-20220602165351-6.png"]]
875
876 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602165351-7.png?rev=1.1||alt="image-20220602165351-7.png"]]
877
878
879
880
881 ==== **RS485 command timeout** ====
882
883 (((
884 Some Modbus device has slow action to send replies. This command is used to configure the RS485-LN to use longer time to wait for their action.
885 )))
886
887 (((
888 Default value: 0, range:  0 ~~ 65 seconds
889 )))
890
891 * (((
892 **AT Command:**
893 )))
894
895 (% class="box infomessage" %)
896 (((
897 (((
898 **AT+CMDDLaa=hex(bb cc)*1000**
899 )))
900 )))
901
902 (((
903 **Example:**
904 )))
905
906 (((
907 **AT+CMDDL1=1000** to send the open time to 1000ms
908 )))
909
910 (((
911
912 )))
913
914 * (((
915 **Downlink Payload:**
916 )))
917
918 (((
919 **0x AA aa bb cc**
920 )))
921
922 (((
923 Same as: AT+CMDDLaa=hex(bb cc)*1000
924 )))
925
926 (((
927 **Example:**
928 )))
929
930 (((
931 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
932 )))
933
934
935
936
937 ==== **Uplink payload mode** ====
938
939 (((
940 Define to use one uplink or multiple uplinks for the sampling.
941 )))
942
943 (((
944 The use of this command please see: [[Compose Uplink payload>>path:#H3.3.4Composetheuplinkpayload]]
945 )))
946
947 * (((
948 **AT Command:**
949 )))
950
951 (% class="box infomessage" %)
952 (((
953 (((
954 **AT+DATAUP=0**
955 )))
956 )))
957
958 (% class="box infomessage" %)
959 (((
960 (((
961 **AT+DATAUP=1**
962 )))
963 )))
964
965 (((
966
967 )))
968
969 * (((
970 **Downlink Payload:**
971 )))
972
973 (((
974 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
975 )))
976
977 (((
978 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
979 )))
980
981
982
983
984 ==== **Manually trigger an Uplink** ====
985
986 (((
987 Ask device to send an uplink immediately.
988 )))
989
990 * (((
991 **AT Command:**
992 )))
993
994 (((
995 No AT Command for this, user can press the [[ACT button>>path:#H3.7Buttons]] for 1 second for the same.
996 )))
997
998 (((
999
1000 )))
1001
1002 * (((
1003 **Downlink Payload:**
1004 )))
1005
1006 (((
1007 **0x08 FF**, RS485-LN will immediately send an uplink.
1008 )))
1009
1010
1011
1012
1013 ==== **Clear RS485 Command** ====
1014
1015 (((
1016 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1017 )))
1018
1019 * (((
1020 **AT Command:**
1021 )))
1022
1023 (((
1024 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1025 )))
1026
1027 (((
1028 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1029 )))
1030
1031 (((
1032 Example screen shot after clear all RS485 commands. 
1033 )))
1034
1035 (((
1036
1037 )))
1038
1039 (((
1040 The uplink screen shot is:
1041 )))
1042
1043 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654160691922-496.png?rev=1.1||alt="1654160691922-496.png"]]
1044
1045
1046 * (((
1047 **Downlink Payload:**
1048 )))
1049
1050 (((
1051 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1052 )))
1053
1054
1055
1056
1057 ==== **Set Serial Communication Parameters** ====
1058
1059 (((
1060 Set the Rs485 serial communication parameters:
1061 )))
1062
1063 * (((
1064 **AT Command:**
1065 )))
1066
1067 (((
1068 Set Baud Rate:
1069 )))
1070
1071 (% class="box infomessage" %)
1072 (((
1073 (((
1074 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1075 )))
1076 )))
1077
1078 (((
1079 Set UART Parity
1080 )))
1081
1082 (% class="box infomessage" %)
1083 (((
1084 (((
1085 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1086 )))
1087 )))
1088
1089 (((
1090 Set STOPBIT
1091 )))
1092
1093 (% class="box infomessage" %)
1094 (((
1095 (((
1096 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1097 )))
1098 )))
1099
1100 (((
1101
1102 )))
1103
1104 * (((
1105 **Downlink Payload:**
1106 )))
1107
1108 (((
1109 **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1110 )))
1111
1112 (((
1113 **Example:**
1114 )))
1115
1116 * (((
1117 A7 01 00 60   same as AT+BAUDR=9600
1118 )))
1119 * (((
1120 A7 01 04 80  same as AT+BAUDR=115200
1121 )))
1122
1123 (((
1124 A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1125 )))
1126
1127 (((
1128 A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1129 )))
1130
1131
1132
1133
1134 == 3.6 Listening mode for RS485 network ==
1135
1136 (((
1137 This feature support since firmware v1.4
1138 )))
1139
1140 (((
1141 RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
1142 )))
1143
1144 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602171200-8.png?width=1007&height=567&rev=1.1||alt="image-20220602171200-8.png" height="567" width="1007"]]
1145
1146 (((
1147 To enable the listening mode, use can run the command AT+RXMODE.
1148 )))
1149
1150 (((
1151
1152 )))
1153
1154 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1155 |=(% style="width: 161px;" %)(((
1156 **Command example:**
1157 )))|=(% style="width: 337px;" %)(((
1158 **Function**
1159 )))
1160 |(% style="width:161px" %)(((
1161 AT+RXMODE=1,10
1162 )))|(% style="width:337px" %)(((
1163 Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
1164 )))
1165 |(% style="width:161px" %)(((
1166 AT+RXMODE=2,500
1167 )))|(% style="width:337px" %)(((
1168 Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
1169 )))
1170 |(% style="width:161px" %)(((
1171 AT+RXMODE=0,0
1172 )))|(% style="width:337px" %)(((
1173 Disable listening mode. This is the default settings.
1174 )))
1175 |(% style="width:161px" %)(((
1176
1177 )))|(% style="width:337px" %)(((
1178 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1179 )))
1180
1181 (((
1182 **Downlink Command:**
1183 )))
1184
1185 (((
1186 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1187 )))
1188
1189 (((
1190
1191 )))
1192
1193 (((
1194 **Example**:
1195 )))
1196
1197 (((
1198 The RS485-LN is set to AT+RXMODE=2,1000
1199 )))
1200
1201 (((
1202 There is a two Modbus commands in the RS485 network as below:
1203 )))
1204
1205 (((
1206 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1207 )))
1208
1209 (((
1210 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1211 )))
1212
1213 (((
1214 RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1215 )))
1216
1217 (((
1218 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602171200-9.png?rev=1.1||alt="image-20220602171200-9.png"]]
1219 )))
1220
1221 (((
1222
1223 )))
1224
1225 (((
1226 (% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
1227 )))
1228
1229
1230 == 3.7 Buttons ==
1231
1232
1233 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1234 |=(% style="width: 30px;" %)**Button**|=(% style="width: 355px;" %)**Feature**
1235 |=(% style="width: 30px;" %)**ACT**|(% style="width:355px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1236 |=(% style="width: 30px;" %)**RST**|(% style="width:355px" %)Reboot RS485
1237 |=(% style="width: 30px;" %)**PRO**|(% style="width:355px" %)Use for upload image, see [[How to Update Image>>path:#H6.1Howtoupgradetheimage3F]]
1238
1239
1240 == 3.8 LEDs ==
1241
1242 (% border="1" cellspacing="10" style="background-color:#f7faff; width:500px" %)
1243 |=(% style="width: 30px;" %)**LEDs**|=(% style="width: 400px;" %)**Feature**
1244 |(% style="width:30px" %)**PWR**|=(% style="width: 400px;" %)Always on if there is power
1245 |(% style="width:30px" %)**SYS**|=(% style="width: 400px;" %)After device is powered on, the SYS will (% style="color:green" %)fast blink in GREEN (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)on GREEN for 5 seconds(%%). SYS will (% style="color:green" %)blink Blue(%%) on every upload and (% style="color:green" %)blink Green(%%) once receive a downlink message.
1246
1247
1248 = 4. Case Study =
1249
1250 User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>path:/xwiki/bin/view/Main/Application%20Note%20%3A%20Communicate%20with%20Different%20Sensors%20-----%20RS485-LN%20%20RS485-BL/]]
1251
1252
1253 = 5. Use AT Command =
1254
1255 == 5.1 Access AT Command ==
1256
1257 (((
1258 RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1259 )))
1260
1261 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162355560-817.png?rev=1.1||alt="1654162355560-817.png"]]
1262
1263
1264 (((
1265 In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
1266 )))
1267
1268 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162368066-342.png?rev=1.1||alt="1654162368066-342.png"]]
1269
1270
1271 (((
1272 More detail AT Command manual can be found at [[AT Command Manual>>url:https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1273 )))
1274
1275
1276
1277 == 5.2 Common AT Command Sequence ==
1278
1279 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1280
1281 If device has not joined network yet:
1282
1283 (% class="box infomessage" %)
1284 (((
1285 **AT+FDR**
1286 )))
1287
1288 (% class="box infomessage" %)
1289 (((
1290 **AT+NJM=0**
1291 )))
1292
1293 (% class="box infomessage" %)
1294 (((
1295 **ATZ**
1296 )))
1297
1298
1299 If device already joined network:
1300
1301 (% class="box infomessage" %)
1302 (((
1303 **AT+NJM=0**
1304 )))
1305
1306 (% class="box infomessage" %)
1307 (((
1308 **ATZ**
1309 )))
1310
1311
1312 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1313
1314
1315 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1316
1317 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
1318
1319 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
1320
1321 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
1322
1323 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1324
1325 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
1326
1327 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1328
1329 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1330
1331 (% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1332
1333 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1334
1335
1336 (% style="color:red" %)**Note:**
1337
1338 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1339 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1340 3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1341 4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1342
1343 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162478620-421.png?rev=1.1||alt="1654162478620-421.png"]]
1344
1345
1346 = 6. FAQ =
1347
1348 == 6.1 How to upgrade the image? ==
1349
1350 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1351
1352 * Support new features
1353 * For bug fix
1354 * Change LoRaWAN bands.
1355
1356 Below shows the hardware connection for how to upload an image to RS485-LN:
1357
1358 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162535040-878.png?rev=1.1||alt="1654162535040-878.png"]]
1359
1360 **Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1361
1362 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1363
1364 **Step3: **Open flashloader; choose the correct COM port to update.
1365
1366 (((
1367 (% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
1368 )))
1369
1370
1371 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175818-12.png?rev=1.1||alt="image-20220602175818-12.png"]]
1372
1373
1374 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175848-13.png?rev=1.1||alt="image-20220602175848-13.png"]]
1375
1376
1377 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175912-14.png?rev=1.1||alt="image-20220602175912-14.png"]]
1378
1379
1380 **Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1381
1382 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175638-10.png?rev=1.1||alt="image-20220602175638-10.png"]]
1383
1384
1385 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1386
1387 User can follow the introduction for [[how to upgrade image>>path:#H6.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
1388
1389
1390 == 6.3 How many RS485-Slave can RS485-BL connects? ==
1391
1392 The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#H3.3.3Configurereadcommandsforeachsampling]].
1393
1394
1395 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1396
1397 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1398
1399 Detail info check this link: [[Set Packet Receiving Response Level>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.23SetPacketReceivingResponseLevel]]
1400
1401
1402 = 7. Trouble Shooting =
1403
1404 == 7.1 Downlink doesn’t work, how to solve it? ==
1405
1406 Please see this link for debug: [[LoRaWAN Communication Debug>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1407
1408
1409 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1410
1411 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband]]
1412
1413
1414 = 8. Order Info =
1415
1416 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1417
1418 (% style="color:blue" %)**XXX:**
1419
1420 * (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1421 * (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1422 * (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1423 * (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1424 * (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1425 * (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1426 * (% style="color:blue" %)**US915**(%%): frequency bands US915
1427 * (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1428 * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1429 * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1430
1431 = 9.Packing Info =
1432
1433
1434 **Package Includes**:
1435
1436 * RS485-LN x 1
1437 * Stick Antenna for LoRa RF part x 1
1438 * Program cable x 1
1439
1440 **Dimension and weight**:
1441
1442 * Device Size: 13.5 x 7 x 3 cm
1443 * Device Weight: 105g
1444 * Package Size / pcs : 14.5 x 8 x 5 cm
1445 * Weight / pcs : 170g
1446
1447 = 10. FCC Caution for RS485LN-US915 =
1448
1449 (((
1450 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1451 )))
1452
1453 (((
1454 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
1455 )))
1456
1457 (((
1458
1459 )))
1460
1461 (((
1462 **IMPORTANT NOTE:**
1463 )))
1464
1465 (((
1466 **Note: **This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1467 )))
1468
1469 (((
1470 —Reorient or relocate the receiving antenna.
1471 )))
1472
1473 (((
1474 —Increase the separation between the equipment and receiver.
1475 )))
1476
1477 (((
1478 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1479 )))
1480
1481 (((
1482 —Consult the dealer or an experienced radio/TV technician for help.
1483 )))
1484
1485 (((
1486
1487 )))
1488
1489 (((
1490 **FCC Radiation Exposure Statement:**
1491 )))
1492
1493 (((
1494 This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
1495 )))
1496
1497
1498 = 11. Support =
1499
1500 * (((
1501 Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1502 )))
1503 * (((
1504 Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
1505 )))